SOLUTION: Danny and his sister Elise are 24 miles apart. They start biking toward each other. Danny rides at a rate of 8 miles per hour, and Elise rides at a rate of 12 miles per hour. Ho

Algebra ->  Length-and-distance -> SOLUTION: Danny and his sister Elise are 24 miles apart. They start biking toward each other. Danny rides at a rate of 8 miles per hour, and Elise rides at a rate of 12 miles per hour. Ho      Log On


   



Question 337637: Danny and his sister Elise are 24 miles apart. They start biking toward each other. Danny rides at a rate of 8 miles per hour, and Elise rides at a rate of 12 miles per hour. How long will it be before they meet? How far will they have traveled?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Rate*Time=DIstance
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For Danny,
8%2At=D1
For Elise,
12%2At=D2
Find t when D1%2BD2=12
8t%2B12t=12
20t=12
t=12%2F20=3%2F5hr
t=36 minutes
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For Danny,
D1=8%2A%283%2F5%29=24%2F5miles
For Elise,
D2=12%2A%283%2F5%29=36%2F5miles